Limiting the LFR and LFD to Virtual Realm groups

A lot of people have been complaining about the lack of community and bad behavior due to LFR where people are simply anonymous. Since 5.4. will introduce Virtual Realms, do you think it would be a good idea to limit the groups so that only the people from your virtual realms would be a part of it? This way, there would be some consequences to your actions.

The downside would be longer queue times (perhaps) and less groups overall especially later on during the reset. This of course depends on how many realms will be on each group and we don't know this yet.